William and Isabella had three sons who all died without issue so the heir was their daughter Aveline de Forz.
In February 1130/31, Henry I in the charter for Séez Cathedral refers to Richard de Luci and his mother Aveline.
Meanwhile, the Erewhon Natural Foods Market was founded in 1966 by Aveline and Michio Kushi, with an emphasis on organically-grown produce and macrobiotics.